Chilling and heating accumulations impact bud burst and flowering of ‘KU-PP2’ peach tree

ABSTRACT Temperate climate fruit trees often exhibit uneven budding and flowering, due to the low number of chilling hours that determine the occurrence of dormancy and its depth. The objective of this study was to determine the depth of bud dormancy in peach tree cultivars and evaluate the efficiency of the tetrazolium test for dormancy and comparing with biological test. Branches of the cultivars Aurora 1, Chimarrita, Chiripá, Coral, Eldorado, Granada, Leonense, Maciel, Marli, Premier, and Vanguard were collected between May and August 2008 at two locations: Curitiba and Lapa. The evaluation of dormancy was performed using a biological test of single node cuttings through the parameters: average time for bud burst, velocity of bud burst, final rate of bud burst and rate of vigorous bud burst. For the tetrazolium test, 300 mg of buds was used and the color intensity readings were obtained using a spectrophotometer. The peach tree cultivars evaluated differ in the intensity of dormancy in late fall. The most intense endodormancy cultivars found were: Chiripá, Leonense and Eldorado cultivars, and the weaker cultivars found were: Aurora 1 and Maciel. The tetrazolium test was efficient at estimating the intensity of dormancy in peach trees when the occurrence of cold was suitable for installation endodormancy. At a location with the lowest occurrence of cold (Curitiba), the tetrazolium test did not simulated successfully the biological test results.

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Vulnerability of sweet cherry cultivars to continuous periods of spring frosts in Plovdiv, Bulgaria

Agricultural Science and Technology ◽

10.15547/ast.2020.04.055 ◽

2020 ◽

Vol 12 (4) ◽

pp. 348-352

Author(s):

S. Malchev ◽

S. Savchovska

Keyword(s):

Sweet Cherry ◽

Weather Conditions ◽

Frost Damage ◽

Cold Weather ◽

Bud Burst ◽

Intermediate Group ◽

Air Temperatures ◽

Wide Range ◽

Group Form ◽

Sweet Cherry Cultivars

Abstract. The periods with continuous freezing air temperatures reported during the spring of 2020 (13 incidents) affected a wide range of local and introduced sweet cherry cultivars in the region of Plovdiv. They vary from -0.6°C on March 02 to -4.9°C on March 16-17. The duration of influence of the lowest temperatures is 6 and 12 hours between March 16 and 17. The inspection of fruit buds and flowers was conducted twice (on March 26 and April 08) at different phenological stages after continuous waves of cold weather conditions alternated with high temperatures. During the phenological phase ‘bud burst’ (tight cluster or BBCH 55) some of the flowers in the buds did not develop further making the damage hardly detectable. The most damaged are hybrid El.28-21 (95.00%), ‘Van’ (91.89%) and ‘Bing’ (89.41%) and from the next group ‘Lapins’ (85.98%) and ‘Rosita’ (83.33%). A larger intermediate group form ‘Kossara’ (81.67%), ‘Rozalina’ (76.00%), ‘Sunburst’ (75.00%), ‘Bigarreau Burlat’ (69.11%) and ‘Kuklenska belitza’ (66.67%). Candidate-cultivar El.17-90 ‘Asparuh’ has the lowest frost damage values of 55.00% and El.17-37 ‘Tzvetina’ with damage of 50.60%.

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Peach tree pollen and molecular components: Sensitization and clinical relevance in Madrid.

10.26226/morressier.5acc8ad2d462b8028d89a826 ◽

2018 ◽

Author(s):

Maria Luisa Somoza

Keyword(s):

Clinical Relevance ◽

Peach Tree ◽

Tree Pollen ◽

Molecular Components

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PEACH TREE VIGOR IS A FUNCTION OF ROOTSTOCK XYLEM ANATOMY AND HYDRAULIC CONDUCTANCE

Acta Horticulturae ◽

10.17660/actahortic.2012.932.70 ◽

2012 ◽

pp. 483-489 ◽

Cited By ~ 4

Author(s):

S. Tombesi ◽

J. Marsal ◽

B. Basile ◽

A. Weibel ◽

L. Solari ◽

...

Keyword(s):

Hydraulic Conductance ◽

Peach Tree ◽

Xylem Anatomy

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Variation of growth and phenology traits in poplars planted in clonal trials in Northern Europe—implications for breeding

BioEnergy Research ◽

10.1007/s12155-021-10262-8 ◽

2021 ◽

Author(s):

Anneli Adler ◽

Almir Karacic ◽

Ann-Christin Rönnberg Wästljung ◽

Ulf Johansson ◽

Kaspars Liepins ◽

...

Keyword(s):

Baltic Sea ◽

Populus Trichocarpa ◽

Selection Criterion ◽

Volume Index ◽

Northern Europe ◽

Bud Burst ◽

The Baltic Sea ◽

European Climate ◽

Baltic Sea Region ◽

The Baltic

AbstractThe increased demand for wood to replace oil-based products with renewable products has lifted focus to the Baltic Sea region where the environment is favorable for woody biomass growth. The aim of this study was to estimate broad-sense heritabilities and genotype-by-environment (G×E) interactions in growth and phenology traits in six climatically different regions in Sweden and the Baltics. We tested the hypothesis that both bud burst and bud set have a significant effect on the early growth of selected poplar clones in Northern Europe. Provenance hybrids of Populus trichocarpa adapted to the Northern European climate were compared to reference clones with adaptation to the Central European climate. The volume index of stemwood was under low to medium genetic control with heritabilities from 0.22 to 0.75. Heritabilities for phenology traits varied between 0.31 and 0.91. Locally chosen elite clones were identified. G×E interactions were analyzed using pairwise comparisons of the trials. Three different breeding zones for poplars between the latitudes of 55° N and 60° N in the Baltic Sea Region were outlined. The studied provenance hybrids with origin from North America offer a great possibility to broaden the area with commercial poplar plantations in Northern Europe and further improve the collection of commercial clones to match local climates. We conclude that phenology is an important selection criterion after growth.

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The use of differential thermal analysis in determining the critical temperatures of sweet cherry (Prunus avium L.) flower buds at different stages of bud burst

International Journal of Biometeorology ◽

10.1007/s00484-021-02093-1 ◽

2021 ◽

Author(s):

Ozkan Kaya ◽

Cafer Kose ◽

Muge Sahin

Keyword(s):

Thermal Analysis ◽

Differential Thermal Analysis ◽

Sweet Cherry ◽

Prunus Avium ◽

Bud Burst ◽

Flower Buds ◽

Critical Temperatures ◽

Prunus Avium L

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Identification and Sequence Analysis of a Novel Ilarvirus Infecting Sweet Cherry

Plants ◽

10.3390/plants10030514 ◽

2021 ◽

Vol 10 (3) ◽

pp. 514

Author(s):

Chrysoula G. Orfanidou ◽

Fei Xing ◽

Jun Zhou ◽

Shifang Li ◽

Nikolaos I. Katis ◽

...

Keyword(s):

Phylogenetic Analysis ◽

Nucleotide Sequence ◽

Sanger Sequencing ◽

Sweet Cherry ◽

Novel Species ◽

Peach Tree ◽

Sweet Cherries ◽

Blastn Analysis ◽

Fruit Orchards ◽

Prunus Spp

In the present study, we utilized high throughput and Sanger sequencing to determine the complete nucleotide sequence of a putative new ilarvirus species infecting sweet cherry, tentatively named prunus virus I (PrVI). The genome of PrVI is comprised of three RNA segments of 3474 nt (RNA1), 2911 nt (RNA2), and 2231 nt (RNA3) and features conserved motifs representative of the genus Ilarvirus. BlastN analysis revealed 68.1–71.9% nt identity of PrVI with strawberry necrotic shock virus (SNSV). In subsequent phylogenetic analysis, PrVI was grouped together with SNSV and blackberry chlorotic ringspot virus (BCRV), both members of subgroup 1 of ilarviruses. In addition, mini-scale surveys in stone fruit orchards revealed the presence of PrVI in a limited number of sweet cherries and in one peach tree. Overall, our data suggest that PrVI is a novel species of the genus Ilarvirus and it consists the fifth member of the genus that is currently known to infect Prunus spp.

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